NO.16 HIGH OIL CONSUMPTION/LEAKAGE[AJ (3.0L Duratec)]

id0103a7802200

16
High oil consumption/leakage
DESCRIPTION
•  Oil consumption is excessive.
POSSIBLE CAUSE
•  PCV valve malfunction
•  Improper dipstick
•  Improper engine oil viscosity
•  Engine internal part malfunction

Diagnostic procedure

STEP

INSPECTION

RESULTS

ACTION
1
•  Remove and shake PCV valve.
•  Does PCV valve rattle?
Yes
Go to the next step.
No
Replace the PCV valve.
2
•  Verify the following:
―  No external leakage
―  Proper dipstick
―  Proper engine oil viscosity
•  Are all items normal?
Yes
Inspect the internal engine parts such as valves, valve guides, valve stem seals, cylinder head drain passage, and piston rings.
No
Service if necessary.
Repeat Step 2.
3
•  Verify the test results.
―  If normal, return to the diagnostic index to service any additional symptoms.
―  If malfunction remains, inspect related Service Information and perform repair or diagnosis.
•  If vehicle is repaired, troubleshooting completed.
•  If vehicle is not repaired or additional diagnostic information is not available, replace the PCM.